Automatic mixer and charger for gas-engines.



A. P. GUBRUD. AUTOMATIC MIXER AND GHARGEEFOB GAS ENGINES.

APPLICATION FILED JAE-19. 1910.

Patented May 23, 1911.

3 SHEETS-SHEET l.

A.P.GUBRUD.

AUTOMATIC MIXER AND CHARGER FOR GAS ENGINES..

APPLICATION FILED JAN-19. 1910. 992,958.

Patented May 23, 1911.

-3 SHEETS-SHEET Z.

61 Momma A. P. GUBRUD. AUTOMATIC MIXER AND CHARGER FOR GAS ENGINES.

Al ruonxon FILED mm. mo. Patented may 23 1911 3 SHEETS-SHEET 3.

lllilltfl'llllll) i ADOLPH P. GUBRUD, OF HUDSON, SOUTH DAKOTA.

AUTOMATIC MIXER AND CHARGER, FOR GAS-ENGINES.

Specification of Letters Fatent.

fatentcd L'lfifuv 2353 1911.

Application filed January 19, 1910. Serial No; 533,858.

To all whom it may concern:

Be it known that I, ADOLPH l7. luniuin, citizen of the l nited States, residii'ig at lriudson in the county ot Lincoln and State South Dakota, have in vented certain new and useful improvements in Automatic Mixers and Chargers for Gas-Engines, ot' whicn the t tillowiino in a specification.

This invention coinprehends certain. new and useful iinprovements in internal. comhustion engines, and relates particularly to charge Forming;- devices therefor.

The invention has low: its primary ohject an improved autonnitic mixing and charging dorioc. or mechanism, which, when attached to or incorpm'atcd in an ordinary internal combustion or explosive engine, will increase the kinetic energy and thcrn'tal elliciency of tin engine and ellect an explosion oi. a charge in each cylinder em ployed, for every rcvolution of the fly wheel shalt. And the invention also has for its object an im proved iilllflll'llilllon and arrangement oi air and liquid fuel pumps. together with governor ineclmnisni. whereby the engine may be easily kept under control at all times and. expend its gaseous fuel according: to the load imposed, on the drive shaft.

lVith thcso and otluzr-ohjects in view as will. more fully appear as the description proceeds, the invention consists in certain construictions arrangement; and comhinations of the parts that I shall hereinafter .tully de ihcd. and claim.

For a lull understanding of the invention, reference is to ho had to the :lollowing description and' accompanying drawings in which: i

Figure 1 is a side elevation of one form or embodiment ol" my invention: Fig. 2 is apa'i'tial' horizontal section and partial top plan view thereof; 3 is a longitudinal sectional view of a portion of the engine; Fig. 4. is a trai'isverse sectional view of; a governor mechanism: Fig. 5 illustrates in perspective two parts of means for actuat ing the piston of the liquid fuel pump.

Corresptmding and like parts are referred. toin the following description and indicated in all the views of the drawings by the some reference characters.

iReferring to the drawings, the numeral 1 designates a gas engine \vorl-cing; cylinder which in the present instance is shmvn as horizontally disposed and supported upon any adjustable: bed or casing.

also communicates with the front 2 designates the power piston which is mouulcd :tor rcciprm-atiou in the cylinder 1, and it designates the ordinary pittnan which connects the piston Q 'to the crank 4 of the drive shaft F3. said shaft carrying); fly wheels (3.

The cylinder l is provided at one end with an exhaust port controlled t y an inwardly opening valve 7. the stem of; said valve projectingoiuuuirdly, as shown, and being encircled by a valve closing spring;' 8. A rocker f) is l'ulcrumed intermediate of its ends on a har fill which n'oj ccts outwardly from one end of the cylinder 1, said rocker carrying at our: end a set screw ll designed to strike the outer end of the stern of the valve, 1' when the rocker is moved in one direction, whereby to open tho valve against the tension of the spring 8. The other cnd of the rocker l is (EOIlllt'Ciltl to a rod 12 which extends lonnitudinall along one side of the cylinder 1 toward the urn li haft 3, the rod 12 lining connectcd near one end to a vertically disposed supporting lever 13 which holds it in such position that its roller Iilmay he engaged by a cam 15 formed on the crank shat't.

All of the idiot c-named parts may he of any desired construction. design or type, and are here diacloaed for the purpose of illustration only.

in carrying out my inventiom it secure to the cylinder 11 or mount upon the bed or casing] of the engine in any desired way, an air pump cylinder 16 which in the present embodiment ol the invention extends longitudinally oi the main or working cylinder 1 and which contains a piston or follower head 17 connected to one end of a piston rod This rod works through one end of the cylinder to and is extended toward the ('l'tltili shall 5. where the said rod is provided with a strap 19 mounted upon the shaft 5 and with rollers 20 designed to be engaged. by a cam 21, formed on or secured to the said crank shalt, whereby to reciprocate the piston 17 in the air cylinder 16. At its opposite end the cylinder 10 is t'ormod with an air inlet opening 22 designed to be secured to an air inlet pipe (not shown) the opening 22 communicating with the main interior of the cylinder 16 and said c0nununication being controlled by an inwardly opening and outwardly spring pressed check valve 23. The interior of the cylinder 16 end of the main or working cylinder 1, suchlast named communication belng controlled by an in- 1 wardly opening and outwardly spring which is designated 25. This casing or bar-- rel 25 is connected at one end to a vertically disposed valve casing 26 formed at its lower end for at 'ichment in an. opening formed in the top of the charge forming chamber of the cylinder 16. A check valve 27 is mounted in the casing 26 and opens, against the tension of-its-spring, toward the interior 1 32. of the barrel 25 moves toward the check of the cylinder 16, so that as the piston rod valve, the same will open and allow a charge of hydrocarbon fuel to .be injected into the charge forming chamber of the cylinder 16 to mix with the air that has been aspirated into said chamber'by the rearward move ment of the piston-17. The return movement of the piston {rod-1.32 will permit the valve 27' to close 'and at the same time drawv fresh fuel into the casing 26 through an inlet opening 29 and from a fuel' supply pipe 30 which is connected thereto and which is provided with an inwardly open-' it willbe noted particularly by reference ing check valve, as indicated at 31.

The piston rod is provided at its rear end I mounted for a free longitudinal movement in a slot .35 which is formed in the shank portion of a T-shaped link 36. The outwardly extending and returned-ends 37 of this link 36 are mounted to rock in across head 38 which is mounted for a longitudi nally sliding movement in a. relatively stationary frame 39 forming part of a casting which supports other portions of the governor mechanism. The cross head 38 .is

formed; with an opening 40 extending there-- through, and a spring 41 has one end loosely inserted in the opening 40, the other end. of said spring being pressed upon by a' regulating screw 42 which 'iscalq'ied in one arm of a bell crank hand lever 43. This lever is fulcrumed on some stationary part of the casing' 'and is provided with a detentdesigned for: engagement with a segment or quadrant 44. By shifting the lever 43, the

pressure of the spring 41 on the cross head 38 may be varied and the tension of the governor, to be now hereinafter described, may

be adjusted, while in addition to this funcone end to the hand leverv 43 and is connected at its opposite end, near the crank shaft 5, to one arm of a bell crank46. ThlS bell crank is fulcrumed at its elbow on some with a fork 33 through which a transversely extending pin 34 extends, said pin being stationary portion of the engine bed or casing, and the other arm of saidbell crank is connected to a bell crank 47, the lastnamed bell crank carrying the roller .48 designed for engagement by the cam 21. A spark rod 49 is pivotally connected toone arm of the bellcrank 47 and is supported in a downwardly yielding manner by means of a compression spring 50 which is connect-* ed to the bell crank 46 and to the said spark rod 49. The tension of the spring 50 is ex erted in a direction to pull the forward free endof the spark rod 49 in an upward direction, and against a regulating roller 51 which is vertically adjusted, as shown, so that the position (vertically considered) of the spark rod may be varied, as the rod is reciprocated back and forth to-wipeagainst the contact rocker 52 to ignite the charge. Manifestly, by shifting the hand lever 43 in one direction or the other, the rod 45 will be moved in a direction to advance or retard the point at which the cam 21 will contact with the roller 48 to actuate the spring rod .49. In this way thespark is advanced or' retarded.

Coming now to the further descriptlon'of the governing mechanism, before mentioned.

to Fig. 4 that the guide 39 forms part of the casting 53 in which a transversely extending" shaft 54 is mounted for rotation'about its longitudinal axis. This shaft carries, at one end apulley or band wheel 55 and a belt or band 56 'extends over said wheel 55 and over a corresponding wheel 57 mounted'on the crank shaft '5. The. shaft 54 carries at its inner end a bevel pinion 58 whichv meshes with a corresponding pinion 59.

,Fast to the pinion 59 are cars 60 to-which the inner ends of weighted toggle links 61 are piv'otally connected. The outer ends of 7 these toggle links 61 are connectedto a head I 62 from which a stem 63 works inwardly.

The inner end of this stem 63 connected to the'cross head 38. It will thusbe under stood that as the stem 63 is drawn out'or in rod 32 and consequently control'the'output of the pump for, the liquid fuel. The movement of the link 36 is effected by a rod 64 vwhich is pi'votally connected to the lower end of the link and which is also connected -to a projection 65 formed onthe piston rod 18.

. j From, the foregoing description'in con-f nection with the accompanyingdrawings,.. the practical operation of my improved 1n-- ternal combustion engine-will be apparent. vAs the piston 17 is moving in its rearward traverse, it will aspirate a charge of air into the cylinder 16, while a l" the same time the rearward moven'ient of the rod 61 will draw the piston rod 32 rearwanally in the barrel 9:) and suck into the barrel an amount of liquid fuel, proportionate to the position of the cross head 38 and the consequent position of the link 36 controlled by the gov ernor as above set forth. Upon the forward movement of the piston 17, the piston rod 39 will also be moved ftn'wardly and force a charge of liquid fuel into the air in the cylinder 16, the air and liquid fuel being thereby effectually commingled and forced into the forward end of the, main working cylinder 31 just after the spent charge has been vented and just as the power piston starts its backward stroke.

Having thus described the invention, what is claimed as new is: a l

1. In an internal combustion engine in combination with the working cylinder thereof, a fuel pump adapted to pu mp fuel into the working cylinder, an air pump adapted to force air into said cyllmlw. the air pump including a piston rod, the i": l pump also inclui'ling a piston rod, an op erativc connection. between the two piston rods whereby one will be actiujd'ed by the other, and means for automatically adjust- .ing the connection to vary the stroke of the fuel pump piston rod.

2. In an internal combustion engine, in combination with the working cylinder thereof, a fuel pump adapted to pump fuel into the working cylinder, an air pump adapted to force air into the cylinder, said air pump including a piston rod, the fuel pump also including a piston rod, an operative connection between the two piston rods whereby one will be actuated by the other, and means for adjusting the connection to vary the stroke of the fuel pump piston rod.

3. In an internal combustion engine, and in combination with the working cylinder thereof, an air pump adapted to pump air into the working cylinder, said pump including a reciprocating piston rod, a fuel pump adapted to pump fuel into the working cylinder and also including a reciprocatinn: piston rod, means for reciprocating one of said piston rods, means including a link for o iieratively connecting said rods, and a shiftable support to which said link is pivotally connected whereby the stroke of one of said rods may be lengthened or shortened.

4. In an internal combustion engine, and in combimition with the working cylinder thereof, an air pump adapted to pump air into the cylinder and operatively connected to the crank shaft of the engine, a fuel pump adapted to pump fuel into the working cylinder, the said fuel pump including a piston rod'and the air pump also including a piston rod, a slotted link, a pin secured rod.

5. in an internal combustion engine and in combination with the working cylinder thereof, an air pump adapted to pump air into the vvorl-ziug cylinder, :1 fuel pump adapted to pump fuel into the working cylinder, a piston rod working in the fuel pump, a governing mechanism. controlled by the speed of the engine and iiu-luding a rrosshead, a slotted link pivotally conncctci'l to tho crosshcad and opcrativcly connected to said piston rod, the cross head being manipulated by the variations in the speed of the governor, the air pump including a piston rod, means for reciproi'rating said piston rod, and a pivotalconnection between said last named piston rod and the link.

6. in an internal combustion engine and in combimilion with the working cylimlcr thereof, means for pumping air and fuel into the working cylinder, such means inchiding a fuel pump, a governor comrolled crosshcad, a link pivotally connected to said crosshad, said link being formed with a slot, and the fuel pump inchuling a piston rod provided Willi a cross pin acrxmunodaicd in said slot, means for rocking said link, the crosshead being provided with an opening, a spring having one end fitted in said opening supported to resist the movement of the cross-head in one direction, and a hand lever adapted to vary the tension on the sprin 7. In an internal combustion engine and in combii'uition with the working cylinder thereof, means for pumping air and fuel into said working cylinder, said means inchiding a fuel pump and a piston rod work.- ing therein, a governor controlled movable crossheud, a slotted link pivotally connected to said cross head, means for rocking said link, the piston rod being provided with a crosspin movably mounted in the slot of the link, a spring connected at one end to the crosshcad and fulcrumed intermediate of its ends, and a hand lever adapted to bear on the opposite end of said spring to vary the tension of the spring on the crossheml.

8. In an internal combustion engine, and in combination with the working cylinder thereof, means for forcing air and fuel into the working cylinder, said means including a fuel pump and a. piston rod working therein, and an air pump and a piston rod working therein, means for automatically varying the stroke of one of the rods relative to the other according to the load imposed on the engine, a hand lever arranged to manu- &

ally control said means, a spark producing mechanism, and means connecting said hand lever with said. mechanism for ad Vancing and JL-etarding the spark.

9. In an internal (,OiDlIJllS-ilOI] engine, and in combination with the working cylinder thereof. means for nun aim air and fuel into said working e 'linder, means for autoniatieally Varying the proportions of fuel relative to the air according to the load imposed on the engine, a hand lever arranged to manually control siiid means, a spark pro ducing; lion :1 hell crank to which said bar is connected :1 link rod connected to the hand lei'er, ahell crank connected to the link rod and. the first named hell cranld means for engaging the first named bell crank to operate the spark producing bar,

' and a yieldahle' connection between the second named hell crank and said bar.

10 In an internal combustion engine, and in coinhinationwlth the working cyl-nniler thereof, means for pumping air and fuel.

into the working cylinder, such 11 eans includinga t'ud pump a governor controlled cross head, a supporting guide upon which the 'crosshead. is mounted i'or movement, a

into the working cylinder, 21 fuel pump T slniped link .)ivotally connected. to said eross-heed and formed in its shank with a longitudinal slot, the fuel pump including a piston rod provided with a forked end and a pin extending through said end. and

= mounted in said slot/[the first named'means including anair pump and piston. rod

mounted therein, and a pivotal connection 3 between said link and the last named. rod.

1]. Yin-an internal combustion engine, and in combination with the working cylinder thereof, an air pump adapted to pump air a liiaii a, 

